// 实现这个项目的构建任务
const { dest, src,series,parallel,watch } = require('gulp')
const loadPlugins = require('gulp-load-plugins')

const browserSync = require('browser-sync')

const plugin = new loadPlugins()
const bs = browserSync.create()
const data = {
    menus: [
      {
        name: 'Home',
        icon: 'aperture',
        link: 'index.html'
      },
      {
        name: 'Features',
        link: 'features.html'
      },
      {
        name: 'About',
        link: 'about.html'
      },
      {
        name: 'Contact',
        link: '#',
        children: [
          {
            name: 'Twitter',
            link: 'https://twitter.com/w_zce'
          },
          {
            name: 'About',
            link: 'https://weibo.com/zceme'
          },
          {
            name: 'divider'
          },
          {
            name: 'About',
            link: 'https://github.com/zce'
          }
        ]
      }
    ],
    pkg: require('./package.json'),
    date: new Date()
  }
  const clean = () => {
    return del(['dist', 'temp'])
  }
  
  const style = () => {
    /**
     * 但是并没有与src一样的路径。所以需要指定 {base：'src'}
     */
    return src('src/assets/styles/*.scss', { base: 'src' }).pipe(plugin.sass())
      .pipe(dest('dist'))
  }
  
  const script = () => {
    return src('src/assets/scripts/*.js', { base: 'src' }).pipe(plugin.babel({
      presets: ['@babel/preset-env']
    }))
      .pipe(dest('dist'))
  }
  
  const page = () => {
    return src("src/*.html", { base: 'src' }).pipe(plugin.swig({data})).pipe(dest('dist'))
  }
  
  const image = () => {
    return src("src/assets/images/**", { base: 'src' }).pipe(plugin.imagemin()).pipe(dest('dist'))
  }
  
  const fonts = () => {
    return src("src/assets/fonts/**", { base: 'src' }).pipe(plugin.imagemin()).pipe(dest('dist'))
  }
  
  const extra = () => {
    return src("public/**", { base: 'public' }).pipe(dest('dist'))
  }
  
  const serve = () => {
    watch("src/assets/styles/*.scss",style)
    watch("src/assets/scripts/*.js",script)
    watch("src/*.html",page)
    watch([
      'src/assets/images/**',
      'src/assets/scripts/*.js',
      'src/*.html'
    ],bs.reload)
  
    bs.init({
      server: {
        port:8080,
        // baseDir: 'dist',
        baseDir:["dist","public","src"],
        files:'dist/**',
        // open:false,
        routes: {
          '/node_modules': "node_modules"
        }
      }
    })
  }
  const compile = parallel(page, script)
  
  const build = parallel(compile,fonts,image,extra)
  
  const start = series(compile,serve)
  
  module.exports = {
    clean,
    compile,
    build,
    start
  }